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प्रश्न
Explain the following :
Water does not run out of a dropper unless its rubber bulb is pressed .
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उत्तर
Water is held inside the dropper against the atmospheric pressure because the pressure due to height column of liquid inside the dropper is less than the atmospheric pressure. By pressing the dropper we increase the pressure inside the dropper and when it becomes greater than the atmospheric pressure the liquid comes out of the dropper.
संबंधित प्रश्न
Fill the missing word in the blank spaces in the following statements:
Air moves from a region of __________ pressure to a region of ________ pressure.
What do you understand by atmospheric pressure?
How is water drawn up from a well by a water pump?
Explain how is the height of mercury column in tube of a simple barometer, a measure of the atmospheric pressure.
How is the barometric height of a simple barometer affected if Its tube is slightly tilted from vertical?
State two factors which affect the atmospheric pressure as we go up.
Why do not we feel uneasy even under enormous pressure of the atmosphere above as?
If there is low pressure at the equator, what will be the condition of air pressure in the Arctic Zone?
The value of the atmospheric pressure at sea level is
Define one atmosphere.
